| Acronym | Definition |
|---|
| OASA➣Office of the Assistant Secretary of the Army |
| OASA➣Office of Academic and Student Affairs |
| OASA➣Office of Alcoholism and Substance Abuse |
| OASA➣Office of Alcohol and Substance Abuse |
| OASA➣Ontario Amateur Softball Association |
| OASA➣Oklahoma Association of School Administrators |
| OASA➣Orienteering Association of South Australia |
| OASA➣Oregon Adult Soccer Association |
| OASA➣Olympic and Amateur Sports Act |
| OASA➣Organisation Against the Suffering of Animals (Denmark) |
| OASA➣Older Adult Services Act |
| OASA➣Office of the Assistant Secretary for Administration |
| OASA➣Oklahoma Amateur Softball Association |
| OASA➣Orthodontic Assistant School of Atlanta |
| OASA➣Organismos Astikon Siginonion Athinon |
| OASA➣OpenOffice.org Association for South Africa |
| OASA➣Oregon Abuse Survivors and Advocates |
| OASA➣Ontario Amputee Sports Association |
| OASA➣Oregon Ambulatory Surgery Association |
| OASA➣Office Administration Student Association |
| OASA➣Observer's Assessment of Sedation and Anesthesia |
| OASA➣Ottawa Area Superintendents' Association (Canada) |
| OASA➣Office of the Assistant Secretary for Aging |